Summary: I give the "BassJump 2" 4 stars because it massively improves the sound of a MacBook Pro. However, as a "sub-woofer", this speaker is miniscule. The speaker driver is about 3 inches, which is about 1,000 larger than the speakers in a Mac Book, but several times smaller than a proper woofer.
Summary: This product worked right out of the box in about two minutes or less. Sounds unbelievable. The only problem is the speakers on my MacBook Pro Retina sound like crap without this. It's a must buy. Don't think just do it. You will be very happy...
Fairly good for the price, but with two small flaws
4 May 2013
Summary: I've owned the BassJump 2 for a little over a month and generally have been very satisfied by the boost it gives to the MacBook's built in speakers. It provides enough bass for full external sound from your MacBook without having to buy anything else.
Summary: It isn't loud enough. What sound it does make is full of static and distortion. It might make an 11" MacBook Air sound slightly better, but it certainly does nothing for Retina MacBook Pros and iMacs. Don't buy this.
Summary: The unit worked well prior to my update to Mountain Lion (10.8) and it fits in nicely with my other Twelve South gear. I have the Twelve South 12-1215 HoverBar Version 2 Adjustable Arm for iPad 2 and iPad 3 , Twelve South (12-0902) BackPack and Twelve South (12-1101) MagicWand Connects Magic Track...